POWER TRAIN GRT8100 SERVICE MANUAL
7-4
Published 3/26/2018, Control # 596-05
ELECTRONIC CONTROL SYSTEM
Description
The engine control system is an electronically operated fuel
control system that also provides many operator and vehicle
features as well as reducing exhaust emissions while
optimizing engine performance.
The ECM performs diagnostic tests on most of its circuits
and will activate a fault code if a problem is detected in one of
these circuits. Along with the fault code identifying the
problem, a snapshot of engine operating parameters at the
time of fault activation is also stored in memory. Some fault
codes will cause a diagnostic lamp to activate to signal the
driver. The fault codes can be viewed on the crane control
system display in the operator’s cab.The ECM
communicates with service tools supplied by Cummins
through a SAE J1939 datalink.
The ECM also monitors the condition of the diesel particulate
filter (tier 4 engines only) and will alert the operator by way of
an indicator on the crane control system display if the filter
becomes clogged with carbon. When the filter becomes
clogged, the ECM will control the exhaust system cleaning
process to clean the filter of particulate matter.
Engine Control System Indicator Lights
Engine Stop Light
The Engine Stop Light is located in the crane control system
display. It is a red indicator light that illuminates to signify a
serious engine problem that requires the vehicle and the
engine to be stopped as soon as safely possible. The engine
should remain shut down until the fault can be repaired.
Engine Warning Light
The Engine Warning Light is located in the crane control
system display. It is an amber indicator light that is a part of
the engine’s electronic control system and when illuminated,
gives the operator a signal that there is a engine or
transmission problem which must be corrected.
Exhaust System Cleaning Required Indicator
The Exhaust System Cleaning Required indicator is located
in the crane control system display. This indicator illuminates
amber when the diesel particulate filter is getting filled with
soot and needs to be cleaned out.
The indicator will be lit continuously during the early stages
of clogging. If the system continues to clog, the lamp will
begin to flash.
If even more clogging occurs, the engine warning light will
illuminate in addition to the DPF indicator and a slight engine
derate will occur.
.
CAUTION
Engine Shut-down Condition!
When the DPF indicator illuminates or flashes, start the
exhaust system cleaning process.
Should the engine light come on with the DPF indicator,
the engine will shut down and an authorized engine
manufacturer service person must be contacted to re-start
the engine.
WARNING
Fire or Burn Hazard!
During the exhaust system cleaning process the exhaust
becomes very hot. Do not park the vehicle near
flammable objects.
Use caution near the exhaust tailpipe during exhaust
system cleaning as it will become very hot.
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